• A 3-Phase Current Transducer based on microfluxgate sensors 

      Autor: Ripka P.; Grim V.; Chirtsov A.
      (Elsevier, 2019)
      Novel 3-phase DC/AC current transducer for 3-phase current lines is based on 8 integrated fluxgate sensors. Using full information from each sensor rather than gradiometric pairs, we suppress crosstalk between individual ...
    • Crossfield response of industrial magnetic sensors 

      Autor: Ripka P.; Vyhnánek J.; Chirtsov A.
      (IOS Press, 2017)
      Magnetic sensors used for non-destructive testing, metal detection and other applications are subjected to large perpendicular field. In this paper we show that the existing models describing the response of anisotropic ...
    • Design and modeling of a linear speed sensor with a flat type structure and air coils 

      Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.; Grim V.
      (Elsevier, 2020)
      This paper presents the design and modeling of a linear eddy current speed sensor with a flat type structure and an air coil configuration. The theory of the eddy current speed sensor is based on utilizing the speed component ...
    • Design and Optimization of an Eddy Current Speed Sensor for Rotating Rods 

      Autor: Mirzaei M.; Ripka P.; Grim V.; Chirtsov A.
      (IEEE Sensors Council, 2020)
      This paper presents the design and optimization of a novel eddy current speed sensor for rotating rods and cylindrical shafts. The sensor consists of one excitation coil and two pick-up coils. All coils are stationary; we ...
    • Design of a flat-type magnetic position sensor using a finite-difference method 

      Autor: Mirzaei M.; Macháč J.; Ripka P.; Chirtsov A.; Vyhnánek J.; Grim V.
      (The Institution of Engineering and Technology (IET), 2020)
      This study presents an analysis and the design of a new flat-type position sensor with an external armature. One excitation coil and two antiserially connected pickup coils are used in the stationary part. Solid iron ...
    • Eddy Current Linear Speed Sensor 

      Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.
      (IEEE, 2019)
      Novel eddy current speed sensor with axisymmetric coils and solid iron rod as moving part is presented. The analysis is performed for both dc and ac coil currents and for variable iron rod translational speed. The coil ...
    • Eddy current speed sensor with magnetic shielding 

      Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Grim V.
      (Elsevier, 2020)
      This paper presents the design and analysis of a new eddy current speed sensor with ferromagnetic shielding. Aluminum and solid iron are considered for the moving part. One excitation coil and two antiserially connected ...
    • Magnetic Calibration System With Interference Compensation 

      Autor: Janošek M.; Dressler M.; Petrucha V.; Chirtsov A.
      (IEEE, 2019)
      This paper describes a novel method for calibrating dc-precise magnetometers in the low field range (± 100 μT), which gives acceptable results even in laboratory conditions with significant magnetic interference. By ...
    • Modeling of hysteresis loops using rational and power functions 

      Autor: Mirzaei M.; Ripka P.; Vyhnánek J.; Chirtsov A.; Grim V.
      (Elsevier, 2021)
      Simple and precise hysteresis models with a small number of parameters allowing fast calculation are required for the magnetic analysis, as the field is calculated in a very large number of points. This paper presents a ...
    • Rectangular Array Current Transducer with Integrated microfluxgate Sensors 

      Autor: Chirtsov A.; Ripka P.; Vyhnánek J.
      (IEEE SENSORS, 2018)
      Novel rectangular yokeless current transducer with the range 400 A using 16 microfluxgate sensors around the busbar conductor is presented in this paper. Compared to yokeless transducers utilizing the differential pair of ...
    • Rotational Eddy Current Speed Sensor 

      Autor: Mirzaei M.; Ripka P.; Vyhnánek J.; Chirtsov A.; Grim V.
      (IEEE, 2019)
      A novel eddy current speed sensor is developed to measure the rotational speed of conductive objects. The sensor consists of one excitation coil and two pick-up coils around a rotating cylinder or rod. The sensor does not ...
    • Temperature Influence on Position Transducer for Pneumatic Cylinder 

      Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.
      (IEEE SENSORS, 2018)
      In this paper, temperature sensitivity of inductance position transducer of a pneumatic cylinder system is presented. The magnetic solid iron rod and aluminum piston position changes the inductance of the tubular coil ...
    • Temperature stability of the transformer position transducer for pneumatic cylinder 

      Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Grim V.
      (Elsevier, 2020)
      This paper presents the analysis and design of a transformer position sensor for pneumatic cylinder considering temperature stability. Two solenoid coils as excitation coil and pick up coil around cylinder are used for ...
    • Three-Phase Busbar Current Transducer 

      Autor: Chirtsov A.; Ripka P.; Grim V.
      (IEEE, 2019)
      A true three-phase 1000 A busbar current transducer is based on six micro-fluxgate sensors. Instead of using three independent single-phase current transducers, we use the full information from each sensor. Two TI DRV425 ...
    • Transformer position sensor for a pneumatic cylinder 

      Autor: Ripka P.; Mirzaei M.; Chirtsov A.; Vyhnánek J.
      (Elsevier, 2019)
      A novel transformer-based sensor for a pneumatic cylinder enables measurements of the piston position to be made through a thick conductive cylinder. Unlike existing industrial solutions, which are mainly based on a moving ...